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3 years ago

Evaluate the function when x = -1, 5, -10 *

Mathematics

1 answer:

postnew [5]3 years ago

4 0

Step-by-step explanation:

f(x) = | x² - x + 3 |

f(-1) = |(-1)² - (-1) + 3| = |1 + 1 + 3| = |5| = 5

f(5) = |(5)² - (5) + 3| = |25 - 5 + 3| = |23| = 23

f(-10) = |(-10)² - (10) + 3| = |100 - 10 + 3| = |93| = 93

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a 4.50 g coin of copper absorbed 54 calories of heat. what was the final temperature of the copper if the initial temperature wa

I am Lyosha [343]

The final temperature of copper is 155.43°C.

Step-by-step explanation:

The formula to apply is Q=m*Δt*c where ;

Q=heat energy, m=mass, c=specific heat capacity and Δt= change in temperature

Given that Q=54 calories , m=4.50 g and c=0.092 cal/g°C

In this question find Δt then ,the final temperature.

Δt=Q/m*c

Δt=54/4.50*0.092 =130.43°C

To find final temperature, apply the formula;

Δt=Final temperature - Initial temperature

130.43°C=Final temperature-25°C

130.43°C+25°C=Final temperature

155.43°C

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Specific Heat Capacity : brainly.com/question/12431744

Keyword : specific heat capacity

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4 years ago

A rectangular flowerbed is 22 inches long by 8 inches wide. The flowerbed is filled to a depth of 6 inches with dirt. What is th

Dmitry_Shevchenko [17]

Answer:

The volume of the dirt in the flowerbed is $1,056\ in^{3}$

Step-by-step explanation:

we know that

To find the volume of the dirt in the flowerbed, multiply the long by the width by the depth

$V=(22)(8)(6)=1,056\ in^{3}$

4 0

3 years ago

Please help me fast!

Sloan [31]

9514 1404 393

Answer:

B) 40

Step-by-step explanation:

Vertical angle XZU has the same measure as the given angle, 130°. It is equal to the sum of right angle XZV and unknown angle UZV. So, ...

∠UZV +90° = 130°

∠UZV = 40° . . . . . . . . . subtract 90°

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3 years ago

What's the prime factor of 4, + -1? Testing

andrew-mc [135]

The prime factor is 3

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3 years ago

Read 2 more answers

What is the x intercept of the function

Svetllana [295]

Step-by-step explanation:

0 = sqrt(x - 4) + 3 Set equation equal to 0

-3 = sqrt(x - 4). Subtract 3 from both sides

the principle square root will only output positive values, since if it every outputted a negative value it would not be a function since a function cannot have 2 outputs for the same input.

no x-intercept

8 0

2 years ago